Despite my better judgement, I'm going to help you with this. You see, when you just write out an equation with no explanation of what you want to do with it or what about it is giving you trouble, I get the idea that you are saying, "Here, chump, go do my homework for me, I've got video games to play and I don't see why I should actually have to think when you are here to do it for me."
However, some other person who isn't terminally lazy might be helped.
The trick with this particular equation is to do a substitution. Let and then write:
Which is an easily factorable quadratic:
Hence
or
But if then which is absurd because is defined as the positive square root of .
You can put this solution on YOUR website! Before working on this, I need to know if -9 lies in the radicand or just x.
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